Inferior Right Ventricular Wall Thickness by Echocardiogram: A Novel Method of Assessing Hypertrophy in Neonates and Infants.
Pediatr Cardiol
; 41(8): 1617-1622, 2020 Dec.
Article
in En
| MEDLINE
| ID: mdl-32715337
ABSTRACT
An established echocardiographic (echo) standard for assessing the newborn right ventricle (RV) for hypertrophy has not been thoroughly developed. This is partially due to the RV's complex architecture, which makes quantification of RV mass by echo difficult. Here, we retrospectively evaluate the thickness of the inferior RV wall (iRVWT) by echo in neonates and infants with normal cardiopulmonary physiology. Inferior RVWT was defined at the medial portion of the inferior wall of the RV at the mid-ventricular level, collected from a subxiphoid, short axis view. iRVWT was indexed to body surface area (BSA) to the 0.5 power and normalized to iLVWT to explore the best normalization method. Ninety-eight neonates and 32 infants were included in the final analysis. Mean age for neonates and infants was 2 days and 59 days, respectively. Mean ± SD for neonate and infant end-diastole iRVWT was 2.17 ± 0.35 mm and 1.79 ± 0.28 mm, respectively. There was no residual relationship between the index iRVWT and BSA (r = 0.03, p = NS). In the infant cohort, the iRVWT was significantly lower and iLVWT was significantly higher compared to neonate, consistent with known physiologic changes of RV and LV mass. Thus, iRVWT may serve as a reliable and accurate proxy for RV mass and the parameter warrants further evaluation.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Echocardiography
/
Hypertrophy, Right Ventricular
/
Heart Ventricles
Type of study:
Observational_studies
Limits:
Female
/
Humans
/
Infant
/
Male
/
Newborn
Language:
En
Journal:
Pediatr Cardiol
Year:
2020
Type:
Article
Affiliation country:
United States